“We’re studying the region most hit by the Deepwater Horizon oil spill, which includes the coasts surrounding the Gulf,” explained Tamay Özgökmen, the team’s principal investigator, “to learn more about how things in the water get outside of the surf zone and onto the beaches.”

Scientists are tracking elusive ocean processes to visualize the movement of Gulf waters in 3D. For this experiment, they deployed 250 GPS-equipped drifters (30 were biodegradable) to track surface waters, using a “release and catch” method for repeated use of these specially-outfitted devices. Researchers injected an EPA-approved dye both along and outside the surf zone to trace its movement through the water column. Various in-situ instruments recorded water and atmospheric conditions.